diff --git a/ldapcherry/__init__.py b/ldapcherry/__init__.py
index 409281b..765ca5b 100644
--- a/ldapcherry/__init__.py
+++ b/ldapcherry/__init__.py
@@ -583,7 +583,7 @@
         """
         if self.auth_mode == 'none':
             return 'anonymous'
-        username = self._check_session() 
+        username = self._check_session()
 
         if cherrypy.request.query_string == '':
             qs = ''